San Tin Highway (Chinese: 新田公路; pinyin: Xīntián Gōnglù; Cantonese Yale: san1 tin4 gung1 lou6) is an expressway in North-Western New Territories of Hong Kong, leading off Fanling Highway near the rural village of San Tin and connects Tsing Long Highway on the north of Au Tau, near the new town of Yuen Long. It is also part of Route 9.
The road, completed between 1991–93, has two junctions along its way: San Tin Interchange and Fairview Park Roundabout. Cross border traffic can access the control point at Lok Ma Chau through San Sham Road from San Tin Interchange.